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 * @FilePath: \undefinedd:\练习\文字霓虹灯.html
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body{
            background-color: rgb(4, 15, 36);
        }
        h3{
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%,-50%);
            width: 100%;
            text-align: center;
            font-size: 3em;
            text-transform: uppercase;
            letter-spacing: 10px;
            color: rgb(4, 15, 36); 
            -webkit-box-reflect: below 1px linear-gradient(transparent ,rgb(218, 218, 218));
            animation: san 6s linear infinite;
        }
        @keyframes san{
            0%,15%,50%,52%,70%,90%,99.1%{
                color: rgb(4, 15, 36);
                filter: blur(2px);
            }
            12%,15.1%,60%,70.1%,90.5%,100%{
                color: rgb(255, 255, 255);
                text-shadow: 0 0 5px rgb(22, 138, 216),
                0 0 25px rgb(22, 138, 216),
                0 0 35px rgb(22, 138, 216),
                0 0 105px rgb(22, 138, 216),
                0 0 155px rgb(22, 138, 216);
                filter: blur(0px);
            }
        }
    </style>
</head>
<body>
    <h3>Aurora Borealis night</h3>
</body>
</html>